Dustless brush



' Malyv 19, 192s. 1,538,557

F. S. HUNT DUSTLESS BRUSH Filed Sept. l0, 1923 INVEN TOR.

WJM

A TTORNEY5.`

Patented May i9, 192.5.

Unirse stares essaim rarenioifiice FREDERICK s. i-iiiirr, or MILWAUKEE,wisconsin, assisteert 1To MILWAUKEE nUsT- LESS BRUSH COMPANY, QFMKLNAUKEE, WISCCll\lSl'.lN',Y A. CORPORATION OF WIS- CONSIN.

nusrrnnss BRUSH.

Application filed September 1Q, 19232 Serial No. GELB/18.

To all 'whom it may concern.'

Beit known that l, Fiinmnuon S. HUNT,

a citizen of the United States, and resident of Milwaukee. inthe countyof Milwaukee and State of lisconsinfhave invented new and usefulImprovements in Dustless Brushes, of which the following is adescription, reference being had to the accompanyf ing surrounded by theformer and connected to the reservoir to supply minute quantities ofvolat-ile oil to the surfacey being cleaned. As thus usuallyconstructed, the absorbent tufts, which extend through openings in thewooden brush back, tend to swell and stop the desired flow of oil and ifless tuft strands are placed in the openings or the openings enlarged,the flow'of oil' will be too great.

It is one'of the objects of the `present invention. to overcome thebefore mentioned objectionable features and provide a dustless brush inwhich the absorbent tufts are mounted in a manner to pi'ovide apredetermined 'flow of oil without liability of the flow being retarded.f

A further object of the invention is to provide a dust-less brush inwhich the absorbent tufts are mounted in metal tubes and are reinforcedby non-absorbent tuft strands arranged in a manner to permit the feed ofoil to the surface being cleaned` A further object of the invention isto provide a dustless brush which is of simple construction, is strongand durable", and is well adapted for the purpose described.

`With the above and other objects iii View, the invention consists ofthe improved dust# less brush and its parts and combinations as setforth in the claims, and all equivalents thereof.

In the accompanying drawing, in which the same reference charactersindicate the same parts in all of the views:

Fig. l is a front view of the improved dustless brush, a part beingshown in section to show interior construction;

Fig. 2 isa transverse sectional view thereof on a larger scale;` x

Fig. 3 is a sectional detail v'iewof one of y the absorbent tufts and a.portion of the'` brush'back taken on a still larger scale; and Fig. l isa sectional detail view `ofone of the absorbent tufts.

Referring to thev drawing, the numeral 5 indicates the brush backprovided with a seriesof outer perforations for receiving non-absorbenttufts or bristles 6 which may{ be fastened to the back in `any "mannerde-'- sired. A metal plate7 extends over the upper surface of the back 5and in connection y with the cover 8 spaced therefrom, forms a reservoir9 for holdingkerosene or other volatile oil adaptedto be used `insweeping.

The cover `Sis formed with a continuous groove l0 to engage Athe edgeportions of as shown in Fig. 2; To seal the joint between theplate edgesand the grooved porvthe back 5 to form a tight closure therewith andwith the, edge portions of the platek 7 F tion l0,\ceinent ll isinterposed "therebey tween. `The said back 5 is formed with a mediallongitudinal. line of perforations l2 for receiving tubular metalmembers or ferthe numeral l5 to form an oil tight joint.

Absorbent tuft strands or bristles like palma fiber 15 are mixed withnon-absorbent bristles like liorsehair 16 and the combined strands areinserted into the tubular members lf3 and are held in positionbywires17.

It has been found in practice thatin usn ing theabsorbent strands alone,when saturated with oil, they swell and fill up all of the intersticesvbetween the strands and v i retard or stop the feed of oil, whereas bymixing non-absorbent strands or bristles like horse hair, theinterstices between the bristles remain open y'and the absorbentbristles are not `compressed to an extent to stop the flow ofoilftherethrough, with the 'p i i result that a constant feed of oil ismaintained. The oil so fed lwill flow downwardly p m5 to the lower endsof the bristles and contact with the dust on the surface being cleanedand will preventl the rising of said dust.

The use of horse hair or other like bristles or tutt strands also servesto reinforce the absorbent strands and maintain them in position.

An opening covered With a cap 17 is provided'for filling the reservoir 9with oil,` handle 18 adjustablv Connected to the back 5 is also providedfor using the brush.

From the foregoing description it Will be seen that the dustless brushprovides an all metal reservoir for holding and feeding the oil to theoil tufts and that the said tufts assure eens-tant feed of oil to thetufts When the brush is in sweeping position;

that ll claim as my invention is:

l. A dustless brush, comprising a brush back having an oil reservoirprovided with a pluralitvoii tu''tiopenings, and a tutt oomposed 'ofabsorbent and nonnabsorbent strands entendingz` into each or" saidopenings to control the flow of oil therethrough.

2. A dustless brush, comprisinga brush baol having a pluralit)7 of tuttopenings, an

oil reservoir forming part oig sai'dbrush back and having a plurality'oi' tubular portions Whieh extend through some et `the brush backopenings? a tutt eonxposed oi' mixed absorbent Aand non-absorbentstrands extending` into the tubular portions, and non-absorbent tuftsextending into the other openings of the brush bach. J l

3. A dustless brush, comprising a brush backy having a plurality ol'tuft openings, a metal plateV extending over the upper surface of theback and having openings in register with some of the back openings,

tubular members extending through the register'ing openings and havingmeans for oonneetion with the metal plate, a Cover having a groovedportion which extends around and overlaps the edge portions of the brushback and the metal plate to form a reservoir in connection With saidplate, absorbent tnitv sti-'ands extending into the tubular members, andnon-absorbent tufts extending into the ybrush back openings.

el. A dustless brush, comprising a brush baek having` a pluralitv oi'tutt open-ings, a

metal plate extending over the upper surface of the back and havingopenings 1n register with some of the back openings, tubular `strandsextending intoY the tubular members, and non-absorbent tufts extendinginto the brush back openings. A

5. A rtu'ft for a dustless brush, comprising a tubular member,l andabsorbent and nonabsorbent tutt strands extending into said tubularmember to control the ow of oil therethrough. f

In testimony'whereoi, I affix my signature.

FREDERICK S. HUNT.

